Compilare: user.c: In function ‘HugeMultiply’: user.c:40:1: warning: implicit declaration of function ‘memset’ [-Wimplicit-function-declaration] memset(C, 0, sizeof(C)); ^ user.c:40:1: warning: incompatible implicit declaration of built-in function ‘memset’ [enabled by default] user.c:50:1: warning: implicit declaration of function ‘memcpy’ [-Wimplicit-function-declaration] memcpy(A, C, sizeof(C)); ^ user.c:50:1: warning: incompatible implicit declaration of built-in function ‘memcpy’ [enabled by default] user.c: In function ‘HugeFind’: user.c:70:5: warning: incompatible implicit declaration of built-in function ‘memset’ [enabled by default] memset(left, 0, 202 * sizeof(int)); ^ user.c:80:9: warning: incompatible implicit declaration of built-in function ‘memcpy’ [enabled by default] memcpy(mid, left, sizeof(left)); ^ user.c:88:18: warning: ‘return’ with no value, in function returning non-void [enabled by default] if(!cmp) return; ^ user.c: At top level: user.c:102:1: warning: return type defaults to ‘int’ [enabled by default] main(){ ^ user.c: In function ‘main’: user.c:112:1: warning: implicit declaration of function ‘strlen’ [-Wimplicit-function-declaration] N[0] = strlen(number); ^ user.c:112:8: warning: incompatible implicit declaration of built-in function ‘strlen’ [enabled by default] N[0] = strlen(number); ^ user.c:111:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%s", number); ^